Global Patent Index - EP 1060016 A1

EP 1060016 A1 2000-12-20 - SUPPRESSION OF AGING FOR PD-AU VINYL ACETATE MONOMER CATALYST

Title (en)

SUPPRESSION OF AGING FOR PD-AU VINYL ACETATE MONOMER CATALYST

Title (de)

VERHINDERUNG DER ALTERUNG VON PD-AU-VINYL-ACETAT-KATALYSATOREN

Title (fr)

SUPPRESSION DU VIEILLISSEMENT DES CATALYSEURS DE MONOMERE D'ACETATE DE VINYLE PD-AU

Publication

EP 1060016 A1 (EN)

Application

EP 99934230 A

Priority

  • US 9902587 W
  • US 7383798 P
  • US 24559999 A

Abstract (en)

[origin: WO9939824A1] In one embodiment, the present invention relates to a method of making vinyl acetate monomer, involving contacting reactant gases with a catalyst comprising palladium, gold and a support in the presence of clean steam, wherein the clean steam is present from about 2 to about 10 psia, with the proviso that the support does not comprise alumina or zinc oxide. In another embodiment, the present invention relates to a method of regenerating a palladium-gold catalyst having an alumina-silica support during a process for making vinyl acetate monomer, involving contacting vinyl acetate monomer reactant gases including oxygen with the palladium-gold catalyst in the presence of clean steam at a temperature from about 100 DEG C to about 180 DEG C, wherein the clean steam is present from about 1 to about 8 mole percent of a combination of the vinyl acetate monomer reactant gases and clean steam.

IPC 1-7 (main, further and additional classification)

B01J 20/34; C07C 67/05

IPC 8 full level (invention and additional information)

B01J 23/44 (2006.01); B01J 23/52 (2006.01); C07B 61/00 (2006.01); C07C 67/05 (2006.01); C07C 67/055 (2006.01); C07C 69/15 (2006.01)

CPC (invention and additional information)

B01J 23/52 (2013.01); C07C 67/055 (2013.01); Y02P 20/584 (2015.11)

Combination set (CPC)

  1. C07C 67/055 + C07C 69/01
  2. C07C 67/055 + C07C 69/15

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9939824 A1 19990812; AU 3287099 A 19990823; CN 1292726 A 20010425; EP 1060016 A1 20001220; EP 1060016 A4 20021127; JP 2003535016 A 20031125; US 6156927 A 20001205

INPADOC legal status


2005-03-16 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040914

2003-05-02 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030313

2002-11-27 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20021011

2002-11-27 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-11-27 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7B 01J 23/44 A, 7B 01J 23/52 B, 7B 01J 23/96 B, 7B 01J 38/16 B, 7C 07C 67/055 B, 7B 01J 20/34 B, 7C 07C 67/05 B

2000-12-20 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000811

2000-12-20 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE